Title
Coherent ρ<sup>0</sup> photoproduction in ultra-peripheral Pb-Pb collisions at √<sup>s</sup>NN=2.76 TeV
Date Issued
29 September 2015
Access level
open access
Resource Type
journal article
Author(s)
The ALICE collaboration
Adam J.
Adamová D.
Aggarwal M.M.
Aglieri Rinella G.
Agnello M.
Agrawal N.
Ahammed Z.
Ahn S.U.
Aimo I.
Aiola S.
Ajaz M.
Akindinov A.
Alam S.N.
Aleksandrov D.
Alessandro B.
Alexandre D.
Alfaro Molina R.
Alici A.
Alkin A.
Alme J.
Alt T.
Altinpinar S.
Altsybeev I.
Alves Garcia Prado C.
Andrei C.
Andronic A.
Anguelov V.
Anielski J.
Antičić T.
Antinori F.
Antonioli P.
Aphecetche L.
Appelshäuser H.
Arcelli S.
Armesto N.
Arnaldi R.
Aronsson T.
Arsene I.C.
Arslandok M.
Augustinus A.
Averbeck R.
Azmi M.D.
Bach M.
Badalà A.
Baek Y.W.
Bagnasco S.
Bailhache R.
Bala R.
Baldisseri A.
Baltasar Dos Santos Pedrosa F.
Baral R.C.
Barbano A.M.
Barbera R.
Barile F.
Barnaföldi G.G.
Barnby L.S.
Barret V.
Bartalini P.
Barth K.
Bartke J.
Bartsch E.
Basile M.
Bastid N.
Basu S.
Bathen B.
Batigne G.
Batista Camejo A.
Batyunya B.
Batzing P.C.
Bearden I.G.
Beck H.
Bedda C.
Behera N.K.
Belikov I.
Bellini F.
Bello Martinez H.
Bellwied R.
Belmont R.
Belmont-Moreno E.
Belyaev V.
Bencedi G.
Beole S.
Berceanu I.
Bercuci A.
Berdnikov Y.
Berenyi D.
Bertens R.A.
Berzano D.
Betev L.
Bhasin A.
Bhat I.R.
Bhati A.K.
Bhattacharjee B.
Bhom J.
Bianchi L.
Bianchi N.
Bianchin C.
Bielčík J.
Bielčíková J.
Publisher(s)
Springer Verlag
Abstract
We report the first measurement at the LHC of coherent photoproduction of ρ0 mesons in ultra-peripheral Pb-Pb collisions. The invariant mass and transverse momentum distributions for ρ0 production are studied in the π+π− decay channel at mid-rapidity. The production cross section in the rapidity range |y| < 0.5 is found to be dσ/dy = 425 ± 10(stat.)− 50+ 42 (sys.) mb. Coherent ρ0 production is studied with and without requirement of nuclear breakup, and the fractional yields for various breakup scenarios are presented. The results are compared with those from lower energies and with model predictions.
Volume
2015
Issue
9
Language
English
OCDE Knowledge area
Física nuclear
Subjects
Scopus EID
2-s2.0-84942575935
Source
Journal of High Energy Physics
ISSN of the container
11266708
Sponsor(s)
National Science Foundation - 1305280, 1407051 - NSF
Science and Technology Facilities Council - 2014 STFC Nuclear Physics CG, ALICE, GRIDPP, ST/J000094/1, ST/J000108/1, ST/L005670/1, ST/L005689/1, ST/L005751/1, ST/M00158X/1, ST/M001598/1, ST/M001601/1, ST/M00340X/1 - STFC
Japan Society for the Promotion of Science - 15H03664, 25287048, 26610071 - JSPS
Sources of information:
Directorio de Producción Científica
Scopus